Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106533
Title: | The breakdown of strength size scaling in spherical nanoindentation and microcompression of metallic glasses | Authors: | Wang, S Ye, YF Wang, Q Shi, SQ Yang, Y |
Issue Date: | 15-Mar-2017 | Source: | Scripta materialia, 15 Mar. 2017, v. 130, p. 283-287 | Abstract: | It was previously reported that the strength of metallic glasses (MGs) would scale inversely with the size of a sample or a deformation field, commonly known as “smaller-being-stronger”. However, based on the extensive spherical nanoindentation experiments conducted across a variety of MGs, we demonstrate that such strength-size scaling breaks down at a critical indenter tip radius, which is caused by the transition of the yielding mechanism from bulk- to surface-controlled shear band initiation. Our experimental findings also provide an explanation for the unusual strength scattering observed in the micro-compression of MGs. | Keywords: | Metallic glass Shear band initiation Size scaling |
Publisher: | Elsevier Ltd | Journal: | Scripta materialia | ISSN: | 1359-6462 | EISSN: | 1872-8456 | DOI: | 10.1016/j.scriptamat.2016.12.004 | Rights: | © 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. The following publication Wang, S., Ye, Y. F., Wang, Q., Shi, S. Q., & Yang, Y. (2017). The breakdown of strength size scaling in spherical nanoindentation and microcompression of metallic glasses. Scripta Materialia, 130, 283-287 is available at https://doi.org/10.1016/j.scriptamat.2016.12.004. |
Appears in Collections: | Journal/Magazine Article |
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Shi_Breakdown_Strength_Size.pdf | Pre-Published version | 1.49 MB | Adobe PDF | View/Open |
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